61616073 has 4 divisors (see below), whose sum is σ = 82154768. Its totient is φ = 41077380.

The previous prime is 61616047. The next prime is 61616083. The reversal of 61616073 is 37061616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61616073 - 2¹⁶ = 61550537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61616073.

It is not an unprimeable number, because it can be changed into a prime (61616083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10269343 + ... + 10269348.

It is an arithmetic number, because the mean of its divisors is an integer number (20538692).

Almost surely, 2^61616073 is an apocalyptic number.

It is an amenable number.

61616073 is a deficient number, since it is larger than the sum of its proper divisors (20538695).

61616073 is a wasteful number, since it uses less digits than its factorization.

61616073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20538694.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 61616073 is about 7849.5906262684. The cubic root of 61616073 is about 394.9705110710.

Adding to 61616073 its reverse (37061616), we get a palindrome (98677689).

The spelling of 61616073 in words is "sixty-one million, six hundred sixteen thousand, seventy-three".